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Faulques, E., Ivanov, V. G., Jonusauskas, G., Athalin, H., Pyshkin, O., Wery, J., Massuyeau, F. & Lefrant, S. (2006) Ultrafast photoluminescence spectroscopy of exciton-exciton annihilation in oligoaniline films with nanoscale ordering. Phys. Rev. B, 74 075202.
Added by: Florent Boucher (2016-05-12 13:21:36) |
| Type de référence: Article DOI: 10.1103/PhysRevB.74.075202 Numéro d'identification (ISBN etc.): 1098-0121 Clé BibTeX: Faulques2006 Voir tous les détails bibliographiques  |
Catégories: INTERNATIONAL, PMN Mots-clés: crystals, device, energy-transfer, intermolecular interactions, Luminescence, oligothiophenes, polyaniline, quaterthiophene, thin-films, transistors Créateurs: Athalin, Faulques, Ivanov, Jonusauskas, Lefrant, Massuyeau, Pyshkin, Wery Collection: Phys. Rev. B |
Consultations : 4/544
Indice de consultation : 3% Indice de popularité : 0.75% |
| Résumé |
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The exciton dynamics and optical characteristics of blue-emitting N,N-'-diphenyl-1,4-phenylene-diamine oligoaniline films have been determined. Transient photoluminescence experiments are consistent with internal quantum yields of similar to 5.3% and 10.1% measured for oriented and nonoriented films, respectively. The data indicate a drastic dependence on nanoscale ordering which promotes photoluminescence quenching, a large annihilation rate, and fast exciton diffusion. Therefore, the emission properties can be controlled by the textural morphologies of the layers.
Added by: Florent Boucher |